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Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes, would it take the 3 of them to wash a car, work…
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Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes, would it take the 3 of them to wash a car, work…
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Nov 11, 2018
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Al can wash a car in 60 minutes, and bill can wash a car in 30 minutes. cathy can wash a car in 20 minutes. how long, in minutes, would it take the 3 of them to wash a car, working together?
a. 10
b. 36
c.
d. 110
Mathematics
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Ivana
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6
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Answer:
B
Explanation:
36
Tbt
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Nov 13, 2018
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Tbt
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3
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B) 36
To figure this out you need to average the numbers. To average them you add them all up and divide by how many are there.
(60+30+20)/3
(90+20)/3
110/3
36
Tobias Koller
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Nov 16, 2018
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Tobias Koller
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